Hi!
Sorry to drag up such an old thread, but I came across it a month or two back while googling and wanted to say thanks, that the solution they provided works perfect for me as well. I'm able to use the 2MB of fast on my VXL*30 and 8MB on my GVP sidecar with no issues, for a total of 10MB fast and 2MB chip in my A500.
Attached are a couple screenshots of my config (since romtagmem can be kind of tricky), if anyone else ever comes across this dilemma in the future. You'll see I'm actually doing a double reboot during startup, once to add the extra 2MB high and again to add things like Peter K.'s updated libraries. Boot time is still only a minute or two, just enough time to get a cup of coffee.

Pretty much all libraries then load into the 32-bit fast, as well as the ROM, for best performance. Only downside is with my config it eats up nearly all of my 32-bit fast - still trying to hunt down the correct chips to upgrade my VXL to 8MB, as well.
